core (xmpp): advanced handling of connection termination factory's clientConnectionFailed and clientConnectionLost methods are monkey patched to allow client to tune termination: - a warning when connection is lost in an unclean way - connector is saved to allow to disable automatic reconnection and retry manually later - new triggers connection_failed and connection_lost allow plugins to tune connection termination workflow

# XXX: the Monkey Patch is here and not in src/__init__ to avoir issues with pyjamas compilation
# TODO: remove this when changes are merged in Wokkel
from sat_tmp.wokkel import install
install()